There's just two rules: 1. It must be the fatherland of another OTF participant. 2. You will speak in his/her country's favour and try not to make a point in yours. I'm first: USA. 1. The founding of the USA. That's certainly the most important moment of the USA and a major event for the rest of the world. The foundation of the USA gave an example to the founding of a lot of other countries and it gave a lot of inspiration, in particular for Europe. 2. Winning WW2 in Europe. I think that Europe wasn't able to get rid of fascism on its own at that time, in particular of the nazis. The US could have stayed out of this conflict, but they didn't. I hope that's not conceived as a matter of "praising the enemy is praising yourself" because I'm from Germany. I'm truly grateful for the US beating the crap out of the vilest scum of mankind I can think of, probably including a couple of my own ancestors. I was a bit unsure about putting this at #1, but without the first, the second probably wouldn't have happened. 3. Sending a man to the moon. That was for eternity. This achievement wasn't really important from a position of pure reason, but even if the world forgets the importance of the first two in the future, nobody will ever forget that the first man on the moon was from the USA.